Volumetric Flask Glass Pyrex

A volumetric flask is a highly precise piece of laboratory glassware used for preparing and measuring accurate liquid volumes. Pyrex volumetric flasks are renowned for their high-quality borosilicate glass construction, offering excellent chemical and thermal resistance. Below are the typical specifications for Pyrex volumetric flasks:

General Specifications:

1. Material:
   • Borosilicate glass (resistant to thermal shock, chemical attack, and mechanical stress).
2. Capacity:
   • Common capacities include:
     • 5 mL
     • 10 mL
     • 25 mL
     • 50 mL
     • 100 mL
     • 250 mL
     • 500 mL
     • 1000 mL
     • 2000 mL
3. Accuracy:
   • Tolerance varies by size, typically ranging from ±0.02 mL for smaller sizes (e.g., 10 mL) to ±0.30 mL for larger sizes (e.g., 1000 mL).
4. Markings:
   • Single graduation mark on the neck for precise volume measurement.
   • Permanent, white or amber enamel markings.
5. Stopper:
   • Supplied with either glass or plastic stoppers (standard ground glass joint or polyethylene stopper).
6. Neck Design:
   • Narrow neck for precise meniscus alignment.
   • Designed to reduce evaporation and contamination.
7. Temperature Resistance:
   • Can withstand high temperatures for sterilization (e.g., autoclaving).
8. Chemical Resistance:
   • Resistant to most acids, alkalis, and organic solvents.